otb_again said:here's my situation. I bought a bike used with "less than 1000 miles" on it. I could tell that the chain was new due to that sticky stuff they preserve new chains with, but it's an off brand chain. Chains are cheap to replace relative to a $150 DA cassette, so I don't want to just replace the cassette because the chain is slipping if I can't visually tell that something is wrong with it, given the fact that this chain may be the problem. Not all chains are equal, and I prefer DA.